From: W. Trevor King <wking@drexel.edu>
Date: Wed, 14 Mar 2012 22:49:37 +0000 (-0400)
Subject: Add amplitude and max values to the "no room for wiggle" ValueError string.
X-Git-Tag: 0.6~17
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=8632c3e7c8aff5a12fbb60658f6d22e103ed17a0;p=pypiezo.git

Add amplitude and max values to the "no room for wiggle" ValueError string.
---

diff --git a/pypiezo/afm.py b/pypiezo/afm.py
index 88dd3e8..8f9d621 100644
--- a/pypiezo/afm.py
+++ b/pypiezo/afm.py
@@ -344,7 +344,9 @@ class AFMPiezo (_base.Piezo):
                 _LOG.debug(('generated amplitude for interference wiggle: {}'
                             ).format(config['amplitude']))
                 if config['amplitude'] > max_amplitude:
-                    raise ValueError('no room for a two wavelength wiggle')
+                    raise ValueError(
+                        'no room for a two wavelength wiggle ({} > {})'.format(
+                            config['amplitude'], max_amplitude))
 
         n = config['samples']  # samples in a single oscillation
         scan_frequency = config['frequency'] * n